Flutter propose plusieurs approches de gestion d'état — des approches intégrées (setState, InheritedWidget) aux bibliothèques populaires (Provider, Riverpod, Bloc, GetX). Comprendre les principales options, leurs philosophies et leurs compromis aide à choisir la bonne approche pour une application.
Approches intégrées
setState → local state in a StatefulWidget (simple; doesn't scale to shared state)
InheritedWidget → built-in way to share state down the tree (the foundation many
libraries build on; verbose to use directly)
Provider — simple et recommandé
PROVIDER → official-recommended, built on InheritedWidget; simple, widely used:
→ provide state at a point in the tree; descendants "watch"/consume it
→ ChangeNotifier holds state and notifies listeners → UI rebuilds on change
→ good for many apps; gentle learning curve
